Malicious PDF — malware analysis report

Static analysis result for SHA-256 52d0b5661205e560…

MALICIOUS

PDF

72.7 KB Created: 2021-02-05 18:16:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2915d5e3defaba337691499e1f7b2e56 SHA-1: 27e76c581d6483cd56633b4fa2ac2c34f8c6e4e8 SHA-256: 52d0b5661205e560fb67d021b30f368bb83e289240bc15e3c736bb5b5e270a8c
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bologen.ru/aws?utm_term=pirates+caribbean+violin+sheet+music PDF link annotation
    • https://cdn.sqhk.co/kojetovukufo/AijBtLN/60334031138.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445866/normal_5fd666e32b958.pdfIn PDF document text
    • http://changepass.online/99586896357jgtqm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417216/normal_5ff779862e074.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497697/normal_6004787321791.pdfIn PDF document text
    • http://shopmzm.site/alleson_athletic_apparel_wholesalehyinj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411218/normal_5fe012f5a8d19.pdfIn PDF document text
    • http://rte-ita.fun/mdm_bypass_tool_1._0_freejfbsd.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/djgegfN/bafaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447465/normal_5fd3c119363d5.pdfIn PDF document text
    • https://cdn.sqhk.co/botuvawezej/f9NBWTa/nemirozol.pdfIn PDF document text
    • https://cdn.sqhk.co/fexilejedit/iitgEhc/95285754935.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/TjiTnig/telegram_desktop_voice_call.pdfIn PDF document text
    • https://cdn.sqhk.co/gutemokerezo/highioS/3699554594.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374698/normal_5fdd8bc65bc0e.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/f0vdzgd/wefavena.pdfIn PDF document text
    • https://cdn.sqhk.co/jufulezamuko/fiihaRz/flip_skater_hack_ios.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zanobunu.epizy.com/lake_michigan_fishing_report_racine_wi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ded5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED5 5240 bytes
SHA-256: b24ce4119165e052a6d6bd6e9f26c8c7be7928ee17548bbb15f820c06dfdfe16
font_01_sfnt_off0000f07f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07F 10800 bytes
SHA-256: 63100b58617456c5bcc9938fe0c4eb5a38fff614ac833b299f8d736fd89bf3ee